When two people are having sex, someone runs in completely naked except for a mask (preferably some sort of animal mask) slaps whoever is on top on the ass, screaming and jumping and laughing the whole time, then runs out of the room and closes the door.
Dude, Bry was with his girl last night and I gave him an ANIMAL SURPRISE...I knew that gorilla mask would come in handy. He showed me the red mark on his ass...NICE!
by Grindhouse February 19, 2011
Get the Animal Surprisemug. Dani: *Puts shorts on and reaches in pocket to find a dollar*
Jawsh: You lucky bastard, you just got a retarded surprise.
Jawsh: You lucky bastard, you just got a retarded surprise.
by J a w s h October 29, 2010
Get the Retarded Surprisemug. by DMTisGreat October 21, 2019
Get the Surprise Birthdaymug. The uncommon sexual act where the male claims he is about to ejaculate upon ones' face, but instead slams them in the face with their sturdy, hard schlong with enough force to leave a bruise.
"At a unanimous vote of 11-4, I hereby find you guilty of 1st degree murder of a young girl caused by blunt force trauma, as a result of this, so called, 'Sledge Hammer surprise'."
by GoodOldNO_NAME August 26, 2017
Get the Sledge Hammer Surprisemug. by Nooooooodlfuck January 9, 2018
Get the California surprisemug. The sexual act of filling your asshole up with whipped cream then proceeding to fart said cream into your partner's mouth.
by Dirk Dasterdly August 13, 2021
Get the Boston Cream Surprisemug. the act of gagging your drunk partner with your penis until they vomit on said penis and then quickly shoving your penis into your partners vagina/anus.
by jimmy McDoogle July 3, 2012
Get the California surprisemug.